I bought the Nothing Ear, used it for a week and, unfortunately, had to return it.
I loved the sound quality - nothing else stands close to it. The design is outstanding as well.
However, the noise cancellation and transparency modes have disappointed me. I did update them to the latest version. The noise cancellation is pretty weak (I have compared all 4 modes) - when I am on the tube I can hear all the noise pretty well. Before Nothing Ear, I was using AirPods Pro for the past 2+ years. When you turn on the noise cancellation on AirPods you start to feel like there is a vacuum seal between your eardrum and the AirPod and the amount of noise becomes very minimal. I was hoping Nothing would be somewhere around that, but no.
The transparency mode - unfortunately, not that great. I still felt like my ears were plugged and all the noises and voices were very dim. When wearing Nothing Ear and someone starts a conversation with you, you immediately want to take them out, to hear the person better. When I was using the transparency mode on AirPods I felt like nothing was in my ears and I could hear the surroundings/people almost like there were nothing in the ear.
Conclusion:
I wish the noise cancellation and transparency mode were better even if I had to spend an extra £30-50 on them.